A Pick BX Heater provides instantaneous and complete cooking of starch and other water-miscible slurries. It is also a great choice for viscous slurries such as waste grease and oil. Heating with a Pick BX efficiently reduces the viscosity to promote separation of components at the centrifuge.
It is proven effective on pearl, modified, and cationic starches with solids concentrations up to 35% and cooking temperatures ranging from 90°C – 150°C.
The low velocity design minimizes mechanical shear of the starch granules... an important consideration for cooking most cationic starches.
These heaters can also perform "double duty." They are often used to pre-heat water which is then blended with the starch powder to form the initial slurry. The slurry is then pumped back through the same heater for final cooking.
These compact, non-plugging BX Direct Steam Injection Heaters are available to process flow rates in excess of 600 GPM.
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Benefits of Direct Steam Injection for Starch Cooking
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Why Direct Steam Injection Liquid Heating is the Preferred Choice for Many Industrial Applications
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The unique design of the Pick BX Heater offers key advantages over other high-velocity venturi devices and indirect heat exchangers.
Starch flows through the heater without obstruction. This results in negligible pressure drop when handling high viscosity formulations.
Noise generation is significantly lower and pipe vibration virtually eliminated.
Non-shearing action provides uniform product consistency
This provides a “thorough cook” of starch granules yielding a better cooked product.
For preliminary heater selection use the following Sizing Formula. Next match the liquid flow rate to the appropriate pipe size. The selection should be verified by your local Pick Heater Rep or a Factory Sales Engineer.
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(lb/hr)= 0.43 x flow(GPM) x ∆ T (ºF)
or
(kg/hr) = 0.092 x flow(LPM) x ∆ T (ºC)
Example: 200 GPM x 50ºF temperature rise x 0.43 = 4,300 lb/hr of steam. You would require a 6X50-3BX which has a maximum rated steam capacity of 5,000 lb/hr, and a maximum water flow rate of 500 GPM with welded flanged connections.
Steam Injection Constant Flow Starch Cooker
Heaters are manufactured in Carbon Steel or 316SS. Other alloys/materials available upon request. Liquid and steam piping is available in ANSI/DN Flanged construction.